Water supply concept Lower Saxony 1: 500 000 — Usage pressure for 2030 at mean ratios for groundwater bodies (WMS service)

The Lower Saxony water supply concept serves the overarching objective of ensuring the long-term supply of water in Lower Saxony, in particular public water supply as a key component of public services of general interest. Water supply needs to be further developed in line with current and regional challenges and with a view to sustainable groundwater management. To this end, it is necessary for policymakers and water authorities as well as for the users of the resource to be able to identify needs at an early stage in order to take measures to ensure the long-term supply of water in Lower Saxony in a timely manner. The Lower Saxony water supply concept provides a nationwide information framework necessary for this purpose. As a technical concept, it serves water users, licensing authorities and the land for water management and the public as a transparent and forward-looking basis for information and planning. Requirements for individual procedures are expressly not the objective. As part of the water supply concept, the current status (reference year 2015) and the medium- and long-term developments of Lower Saxony’s water supply are accounted for. Here, the groundwater requirement for medium and dry conditions and the water needs of the relevant groundwater users are compared at different times (2015, 2030, 2050 and 2100). The methodology of the Lower Saxony water supply concept was carried out in a grid-based manner. For this purpose, a 500 x 500 m grid was created, which extends over the whole of Lower Saxony and Bremen. National data bases for planning the current and future management of groundwater have been transferred to the grid. These formed the basis of the calculations, evaluations and final presentations carried out. The map shows the usage pressure for the 2030 viewing time under medium conditions for groundwater bodies.下萨克森州供水理念（Lower Saxony water supply concept）的核心总目标是保障下萨克森州的长期供水安全，其中公共供水作为普遍利益公共服务的核心组成部分，尤为关键。供水系统需结合当前及区域层面的多重挑战进行优化升级，同时兼顾地下水可持续管理的目标。为此，政策制定者、水务主管部门以及水资源使用者需能够及早识别供水需求，以便及时采取措施保障下萨克森州的长期供水安全。下萨克森州供水理念为此提供了必要的全州范围信息框架。作为一项技术理念，它可为水务使用者、许可主管部门、水资源管理相关主体及社会公众提供透明且兼具前瞻性的信息与规划依据。其核心目标并不涵盖针对单个操作流程的具体要求。 作为该供水理念的组成部分，本次分析涵盖了下萨克森州供水的当前状态（基准年为2015年）以及中、长期发展趋势。在此框架下，研究将对比不同时间节点（2015年、2030年、2050年及2100年）下，中等水文条件与干旱条件下的地下水需求，以及相关地下水使用者的用水需求。 下萨克森州供水理念采用基于网格的研究方法。为此，研究构建了覆盖整个下萨克森州与不来梅州的500米×500米网格单元。用于规划当前及未来地下水管理的国家级数据库已被整合至该网格体系中，这些数据集为本次研究的计算、评估与最终成果展示提供了核心支撑。 本地图展示了中等水文条件下，2030年时间节点的地下水水体使用压力情况。